﻿#define _CRT_SECURE_NO_WARNINGS 1

//编程初学者入门训练第二十三题
//BC25 计算体重指数
//https://www.nowcoder.com/practice/422f6341cf1b4212a7f8c703df111389?tpId=107&tqId=33306&rp=1&ru=/exam/oj/ta&qru=/exam/oj/ta&sourceUrl=%2Fexam%2Foj%2Fta%3FtpId%3D107&difficulty=undefined&judgeStatus=undefined&tags=&title=

#include <stdio.h>

int main() {
    int weight = 0;
    int high = 0;
    scanf("%d %d", &weight, &high);
    double high2 = high / 100.0;

    double res = (weight / (high2 * high2));

    printf("%.2lf", res);
    return 0;
}